You're ignoring several
You're ignoring several obvious points:
FACT - these cars cannot be made to safety standards for developed markets without severely compromising their range and performance.
FACT - compared to gasoline, yes, compressed air is cradle-to-cradle, but energy must be used to compress that air and that energy is going to likely come from electricity, which is currently produced primarily by burning fossil fuels. When you sit down and think about that, you'll realize.. why not just use the electricity directly? What's the point of wasting the time/energy with the air compression?
FACT - MDI only claims to be getting those efficiencies, they have not demonstrated them to a third party.